Note added later: Please read the comments. I planted this wrong and will be digging it up to replant soon.
I finally got my asparagus roots planted! They arrived in the mail a while ago (2 weeks ago I think). I moistened them a bit while waiting to plant them. They seem fine still – little sprouts have started on most of them.
I planted them a bit close – 12 inches apart in my 5 ft x 2.5 ft bed. I gave away half of the crowns and planted 10 crowns in this bed. I dug trenches 8 inches deep, laid out the roots, then added back 2 inches of soil and patted it down.
Since I also kept the planting instructions moist for the past couple weeks, I photographed it before it disintegrates.
Now I just need to be patient for two years.